音标:[,tetrә'sʌlfaid] ;
四硫化物

I couldn't get over this mess. The federal government is confirming what Joan Glickman of Pompano Beach, Florida suspected all along. Tainted drywall from China is giving off a harmful gas that's turning her air-conditioning wiring black, causing it

发表于:2018-12-20 / 阅读(258) / 评论(0) 分类 cnn2009年(十一)月

This is Scientific American Sixty Seconds Science, I'm Sophie Bushwick, got a minute? When Mexican tetra fish moved into darker caves long ago, they evolved to deal with the dark by becoming albino and going blind. A new research shows that the chang

发表于:2018-12-24 / 阅读(327) / 评论(0) 分类 Scientific American(一)月

Mercury Fillings Seem Safer over Time A study in the journal Chemical Research in Toxicology finds that mercury on the surface of dental fillings slowly turns to an inert sulfide compound, which should keep the mercury from harming the nervous system

发表于:2019-01-02 / 阅读(366) / 评论(0) 分类 60秒科学

T Tanshinone IIA 丹参酮IIA Tanshinone I 丹参酮I Tanshinone IIB 丹参酮IIB Taraxasterol 蒲公英甾醇 Taraxerol 蒲公英赛醇 Tauro ursodesoxy cholic acid 牛磺熊去氧胆酸 Taxifolin 花旗

发表于:2019-01-03 / 阅读(318) / 评论(0) 分类 医务英语

From VOA Learning English, this is the Health Lifestyle report. Garlic is one of the most common cooking ingredients around the world. Many dishes in Europe, Africa, Asia and the Americas use this strong-flavored vegetable. Garlic is similar to other

发表于:2019-01-12 / 阅读(343) / 评论(0) 分类 2016年VOA慢速英语(十二)月

Black Tongues and Stomach Aches Don: Oh, no, Ya?l, I think I'm having a medical emergency. Quick! Call an ambulance. Ya?l: A medical emergency, Don? Are you sure? You look fine to me! D: But I'm not. This morning, I had a terrible stomach ache. And n

发表于:2019-01-26 / 阅读(262) / 评论(0) 分类 英语听力文摘 English Digest

Sewage stinks. But bacteria can make it smell better. Oh, yeah? That's true. Certain forms of bacteria feasting on sewage give off hydrogen sulfide, a really malodorous chemical, and one of several that give sewage its pleasing smell. In general this

发表于:2019-01-26 / 阅读(263) / 评论(0) 分类 英语听力文摘 English Digest

10 Getting The Lead Out 第十章 把铅撵出去 In the late 1940s, a graduate student at the University of Chicago named Clair Patterson (who was, first name notwithstanding, an Iowa farm boy by origin) was using a new method of lead isotope measur

发表于:2019-02-17 / 阅读(373) / 评论(0) 分类 万物简史
学英语单词
a master of ceremonies
a. uterina
abscess formation
algeripithecuss
alto cumulus floccus
angle of impedance
anticoagulative Serum
atomate
awne
balanced form of income statement
bath viscosity
bayonet shaped spike
be of good descent
behemoth
bibio formosanus
catheter-related
center of flexure
cernilton
cluster theory
Cock's operation
common club-moss
compression line(compression curve)
compulsory sanction
computer aided tanker operation
concrete useful labo(u)r
conductor rail system
correction curve
Craco
cryptocurrency
dafties
daisywheel
demat
derrick barrel
Diakhao
directive force of magnetism
dissented
double-crank mechanism
dysautonomias
dyspeptone
ectepicondylar foramen
erythrokatalysis
external selection storage
fasciculi fundamental
Ferguson, Adam
field dressing
fixed-frequency multivibrator
free-spiriteds
gene therapy
gomiliximab
government telephone
He that loves the tree loves the branch
heavy-duty manipulator
import letter of credit
indirect gauging
Iridil
joint sheet
kokoi venoms
krista
least-costs
littermate
luterell
main assembly
mask off
microsample
microsomatia
nanoservos
nemestrinid
neottia morrisonicola
New Web Browser
nuclei medialis
nut pine
oil rig
pachycladus
palpebral antioma
pathophoric
patient management
Polygala sibirica L.
power actuated control
precipitated light calcium carbonate
qars (kars)
quadratic quotient search
rectangular expansion tank
repeat while statement
retouched
running broad jump
safeworded
slap-dashes
spindle-tree
start and stop automatic control
statuminated
taken advantage of
TCAR
tetraclone
tetraogallus
Thue-Morse sequence
trees of heaven
truck live lever
undertalk
unsepulchre
washtub bassist
watet
wild grass ground